18QHTF21-22.2222-PD

Oscillators Overview

The 18QHTF21-22.2222-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 22.2222 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a standby or power-down mode for energy management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications. This component provides precise timing signals for digital circuits requiring stable clock sources.

Oscillators Feature Summary

• LVCMOS output interface for direct digital logic compatibility
• Integrated standby function to reduce power consumption during idle states
• Compact 4-SMD no-lead surface mount package design

Oscillators Applications

• Digital signal processing systems requiring precise clock synchronization
• Communication equipment utilizing standard frequency references
• Embedded control units needing low-power oscillation modes

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions provided in the official datasheet. Check for any specific handling instructions regarding electrostatic discharge protection during assembly.

Oscillators Selection Notes

Select this model when a fixed 22.2222 MHz frequency is required for synchronous data transmission or processing. The LVCMOS output is ideal for interfacing directly with microcontrollers or FPGAs without additional buffering. Consider the standby feature if power efficiency is critical for battery-operated or portable devices. Verify that the operating temperature range meets your environmental specifications.

Oscillators Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies with consistent LVCMOS outputs and 1.8V operation. The 'PD' suffix typically indicates the presence of a power-down or standby pin functionality. These components are designed for general-purpose timing applications in consumer electronics and industrial control systems.

Oscillators Replacement Considerations

Direct substitutes must match the 22.2222 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD package. Verify pinout compatibility and electrical characteristics such as jitter and phase noise. Cross-reference with other manufacturers offering similar SMD oscillators with identical form factors and functional specs.